Physics · Water Quality Parameters
In water quality classification, a 'soft water' sample typically has a total hardness (expressed as CaCO3) of less than:
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 1250 mg/l
- 2180 mg/l
- 3150 mg/l
- 460 mg/l✓
Correct answer
60 mg/l
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